Key-lock for type-writers.



No. 892,242. PATENTED JUNE 30, 1908. W. D. FRIGKS.

KEY LOCK FOR TYPE WRITERS.

APPLICATION FILED JULY 8, 1907. SBBBETBAHEET 1.

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No. 892,242. PATENTED JUNE 30, 1908. W. D. FRIOKS. KEY LOOK FOR TYPEWRITERS.

APPLICATION FILED JULY 8, 1907.

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W. D. FRIGKS. KEY LOOK FOR TYPE WRITERS.

P neuron FILED JULY 1 o A P 9 7 a SHEETS-SHEET a.

WITNESSES WILLIAM DAVID FRICKS, OF ATLANTA, GEORGIA.

KEY-LOCK FOR TYPE-WRITERS.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed July 8, 1907. Serial No. 382,76 2.

To all whom it may concern:

Be it known that I, WILLIAM DAVID FRICKS, a citizen of the UnitedStates, residing at Atlanta, in the county of Fulton and State ofGeorgia, have invented certain new and useful Improvements in Key-Locksfdr Type-Writers, and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in key locks for typewriters, andthe object in view is the provision of means for automatically settingthe key look when adjusting'a pa er fin er.

ith this and further objects in view, the invention comprises thecombination ofa typewriter having a movable carriage, a pa per fingeradjustable longitudinally thereof, typewriter keys operating inconjunction with said carriage, and means, adapted to be actuated by thepaper finger, for locking the ke s against movement.

The invention further com rises certain other novel constructions, cominations and arrangements of parts as will be hereinafter fully secified and claimed.

In t e accompanying drawings :Figure 1 is a view in front elevation of atypewriter,

ortions of the machine being broken away A or illustrating parts in therear. Fig. 2 is a transverse section taken on the lane indicated by line2, 2 of Fig. 1, the ri bon guide being omitted, and parts of the machinebeing seen in elevation. Fig. 3 is a pers ective view of fragments ofthe machine, il ustrating the present invention applied thereto.

The present invention has for the sake of convemence'been illustrated asapplied to a; typewriter such as is being placed on the market byMessrs. L. C. Smith & Bros. Tgpewriter Co., but it will become obvious,om

the following descri tion, that the invention may readily be app ied toany of the standard typewriters.

It is quite common in the best makes of typewriters to employ somemeansfor locklooking the keys have been ing the keys of the typewriterat the time the carriage arrivesat the extreme of its move ment to theleft, or, in other Words, at the conclusion of a line, so that a numberof imprints of different type on the same spot cannot be made. Thedevices em loyed for thus own as line locks or key locks, and in someinstances have been made adjustable, so that where the operator wishesto terminate the line short of the length of the platen, he may set hisline lock accordingly, and if he is using paper of less width than thelength ofthe platen, or of less width than the width of the paperpreviously used, he will find it necessary to adjust at least. one ofthe pa er fingers.

The present invention 0 viates the necessity for separate adjustment ofthe line lock and pa er fin'ger, the line lock being automatioal yadjusted with any adjustment of the ri ht hand paper finger.

Referring to the drawing by numerals, 1

indicates the framework of the machine upon which is mounted a carriage2, provided with the usual platen 3 disposed in the rear and above theusual type well. A bar 3 is fixed to the carriage 2 and extends arallelto the laten 3' throughout the lengt thereof and in front of the same.Paper fingers 4 and 5 are slidingly carried by the bar 3, each throughthe medium of a plate 6 slidingly clamped about the bar 3 and pivotallyCOD-1 nected' to the respective pa er fingers, a spring 7 being providedfor eac paper'finger for maintaining the same normally in engagementwith the platen.

finger 5 for facilitatin shifting of the same longitudinally of the paten 3. Each of the fingers '4 and 5 is rovided with the usual grippingroller 9. n the ordinary construction of a'typewriter; a raduated plateor bar 10 is secured in front 0 the bar 3 and spaced a sufiicientdistance therefrom for permitting the clamp 6 to slide. Clamp 6 0 coursein fact constitutes a part of the respective paper epending ug finger,and is provided with a or rejection 12.

s the bar 3 is fixed to the carriage 2, the paper finger 5 will ofcourse move with the carriage during its movement, and in the path ofmovement of the projection 12 is arranged the outer end of a crank armor crank 13, whiohcrank is fixed to or formed inteiialed in bearings 15,15 fixed to portions of the frame 1 independently of carriage 2'. Therear end of the shaft-14 is. provided with a ri ht angle portion whichis suitably pivotally connected with a depending bar 16. The lower endof the bar 16 extends loosely through the front portion of-line lo'e'lrbail 17 A ri ht angle flange or ear 8 extends from one e go of thepaper.

ral with a shaft 14. The shaft 14 is jour-' of the machine, and isprovided with an ad- 'usting nut 1 resting upon said bail. A lock nut 19is also threaded onto the rod 16 and, in operation, is threaded downtightly upon the nut 18 for retaining the same against accidentalmovement.

The line locking bail 17 is ivotally mounted on standards 20, 2O fixecinthe frame of the machine, said bail atone end being provided with anupturned flange 21, engaged by a laterally acting spring 22 whichpresses the flange 21 rearwardly and thus e evates the front edge of thebail. Journaled in suitable bearings in the frame 1 is a rod or shaft23, extending upwardly from which are arms 24, 24 pivotally carrying theuniversal bar 25. Fixed to the bar 25 and extending rearwardly therefromis a rod 26 which is arranged to transmit movement to the esca ementmechanism of the carriage. The ro 26 extends beneath the bail 17 and aprojection 27 extends upwardly from said rod contiguous to said bail 17,the projection being formed at its upper end with a seat 28 disposedbeneath the bail 17 and a projection 29 extending at the front of saidbail and a little below the horizontal plane of the elevated front edgethereof.

In front of the uniyersal bar 25 are ar ranged the usual type baractuating levers 30, connected with and actuated by the keys 31 in theusual manner. In operation, when any particular key 31' is depressed,the upper portion of the corresponding lever 30 is moved rearwardly forelevating its type bar, and, during said rearward movement, the lever 30strikes the universal bar 25 and moves the same rearwardly, thusactuating" the carriage release for. ermitting movement of the carriageimmediately after being struck by the type of the articular baractuated. Thus it will be 0 viousthat with each depression of a key 31,the bar 26 must move rearwardly and the projection 29 thus be movedbeneath the ba 17. In the particular machine illu trated, means areprovided for releasing the pressure of the spring 22, when the carriage2 arrives at the termination of its movement toward the left, and, ofcourse, as soon as such pressure is released,

' the bail 17 will dropdown upon the seat 28 ous that during theoperation of the machine,

and will prevent rearward movement of the projection 29, so that thekeys 31 are effec tually locked against operation.

From the foregoing it will be readily obvi- 7 when the carraige 2 ismoved toward the left until the projection or lug 12 strikes the outerend of the crank 13, the further movement of such lugtoward the leftwill rotate the shaft 14 asufiicient distance for depressing the rod 16,and as the'nut 18 is already in contact with thefront edge of the bail17, the bail will be depressed into the path of movement of projection29 and thus lock the keys 31 against operation, it being obvious, ofcourse, that in depressing the front edge of the baiil 17 the pressureof the spring 22 mustbe overcome. Thus it is seen that by merelyshifting the paper finger 5 to any desired point alongthe length of theplaten 3, the line lock or key lock will be immediately set tocorrespond with the width of column or paper corresponding with thatrepresented by the position of the paper finger. No adjustment of anyother parts than the paper finger is required.

The pressure exerted by the spring 22, in the machineillustrated, isvery slight and is only sufficient for sustaining the front edge of thebail 17 elevated, so that the pressure exerted by the projection 12 onthe crank 13 is reduced to a minimum, and therefore in practice I findthat the friction between the paper finger 5 andsurrounding parts, ismore than ample to overcome any resistance of the crank 1 3. Obviously,when the carriage is moved to the right and the projection 12 leavescrank 13, the spring 22 will immediately elevate the front edge of bail17 to its normal position.

While I have illustrated the present invention as applied to a specificand well known standard typewriter, it is obvious, of course,

that the invention is applicable to all of the various forms oftypewriters, and I wish the terms of the appended claims construed tocomprehend typewriters generically.

, What I claim is i I 1. In a t ewriter, a movable carriage, and a paperger moving therewith, a pivotally mounted line lock bail, a springnormally maintaining one edge of said bail in an elevated position, akey actuated'projection movable beneath the elevated edge of said lirelock bail, an'adjustablerod supported on the elevated edge of said bailand a horizontal rock shaft engaged by the paper finger 'for depressingthe adjustable rod and loweringthe normally elevated edge of the bailinto the path of movement of said projectron.

2. In a typewriter, the combination of a movable carriage, a paperfinger moving therewith, a pivotally mounted line lock bail, a springnormally maintaining one edge of said bail in an elevated position, auniversal bar, an arm connecting the same with the carriage escapement,a projection carried by said arm and movable beneath the elevated edgeof said bail, an adjustable rod supported on the elevated edge of saidbail anda horizontal rock shaft engaged by the paper finger fordepressing the adjustable rod and lowering the normally elevated edge ofthe bail into the path of movementof said pro ection.

3. In a typewriter, the combination of a movable carriage, a paperfinger connected thereto, a pivotally mounted line lock bail, a sprmgnormally maintaining one edge of said bail in an elevated position, aseries of key vated edge of the bail into the path of move- 10 levers, auniversal bar actuated thereby, anment of said projection.

arm connecting the universal bar with the In testimony whereof I affixmy signature carriage esoapement, a projection carried by I in presenceof two Witnesses.

said arm and movable therewith, an adjustf v *1 ablerod supported on theelevated edge of WILLIAM DAVID i the bail, and a horizontal rock shaftengaged Witnesses:

by the paper fingenfor depressing said ad- H. M. LEE, justable rod andlowering the normally ele- ,CLAUD. BUFFINGTON.

